I like when it's raining, though I quickly clicked it. I prefer the thunderstorms when there's a whole bunch of lightning and rare fish! It's pretty fun~
I have yet to see snow and fog in this game, I might like them the most. For now though, nothing beats huddling in your comfy warm house with thunder and lightning... In game and out. :'D
I said tunderstorms especially @ night ( also irl, nothing like waking up at 3 in the morning ) but fog is also so mysterious and cool. And snow, because in the south you will never get real snow... (When I was in fifth grade, it snowed 1/2 inch and we were literally cheering...)
I love sunny days! They make everything look really pretty~
Snow is beautiful, too. Unfortunately I haven't experienced any winter weather yet since I have a NA copy of the game. I suppose I could always visit a Winter Dream Town though :3